{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESD5Z12T1G","brand":"onsemi","brandSlug":"onsemi","productSlug":"ESD5Z12T1G","canonicalUrl":"https://icboms.com/onsemi/ESD5Z12T1G","factsUrl":"https://icboms.com/api/mcp/products/ESD5Z12T1G","rawCanonicalId":null},"summary":{"shortDescription":"onsemi ESD5Z12T1G, Zener-type ESD suppressor, 12 V reverse standoff, 240 W peak pulse power, single unidirectional channel, SOD-523 package.","salesMarkdown":"## 12 V rail, 240 W clamp — Zener ESD suppressor for general-purpose protection Its 240 W peak pulse power rating means it can absorb a 9.6 A, 8/20 µs surge without failing — enough for typical ESD events on I/O lines, but not for high-energy lightning surges. The single unidirectional channel protects one signal or power line per device. ## 55 pF capacitance — signal-integrity check for high-speed lines At 55 pF @ 1 MHz, this suppressor adds capacitive loading that rounds digital edges. On a 100 MHz clock line, that capacitance couples with the trace impedance and eats into the eye opening. For sub-10 MHz signals or DC power rails, 55 pF is harmless; for USB 2.0 or Ethernet, look for a lower-capacitance TVS diode. Store the reels dry — SOD-523 is a small plastic package with MSL 1 typical, but humidity exposure still risks popcorning during reflow. ## SOD-523 footprint — fine-pitch soldering required The SOD-523 package is surface-mount and fits standard SOD-523 land patterns. The small pad area means the reflow profile must be tight to avoid tombstoning.","metaTitle":"ESD5Z12T1G onsemi Zener ESD Suppressor – 12 V, 240 W","metaDescription":"onsemi ESD5Z12T1G Zener-type ESD suppressor, 12 V reverse standoff, 240 W peak pulse, SOD-523. Active lifecycle. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"SC-79, SOD-523","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"240W","Base Product Number":"ESD5Z12","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"55pF @ 1MHz","Supplier Device Package":"SOD-523","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"14.1V","Voltage - Clamping (Max) @ Ipp":"25V","Voltage - Reverse Standoff (Typ)":"12V (Max)","Current - Peak Pulse (10/1000µs)":"9.6A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/32a7aa25708c44b218e59a0ef208ee83.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the ESD5Z12T1G replace the ESD5Z12T1?","answer":"The ESD5Z12T1 and ESD5Z12T1G share the same base part number (ESD5Z12) and electrical ratings. The T1G suffix typically indicates a lead-free, RoHS-compliant version. The T1 variant may be older or non-RoHS. Confirm the exact suffix required by your BOM before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/ESD5Z12T1G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/ESD5Z12T1G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}